膀胱後部平滑筋腫の1例

Abstract

53歳女.尿閉を主訴として来院.1, 200mlの残尿があり, 双手診で下腹部腫瘤を認めたので入院した.尿蛋白3(+), SCCの軽度上昇(1.9ng/ml)があった.膀胱鏡では軽度の外方からの圧排所見のみであったが, 排泄性腎盂造影で著明な圧排所見と骨盤底部の石灰化, CT, MRIでは膀胱後部に直径6cmの腫瘤を認めた.針生検では脂肪細胞様の細胞が得られ, α平滑筋アクチン, desmin染色等から膀胱後部平滑筋腫と診断し剔出した.摘出標本は7×7×6cm, 重量250gで, 粘液変性, 嚢胞状変化, 石灰化, 硝子化を伴った平滑筋腫であった.膀胱後部平滑筋腫の報告は, 日本でこれまでに18例のみである

We report a case of retrovesical leiomyoma in a 53-year-old woman. In September, 1994, she visited our clinic with the chief complaint of urinary retention. Drip infusion pyelography (DIP), computed tomographic (CT) scan, and magnetic resonance imaging (MRI) revealed a large tumor behind the urinary bladder. Simple tumor excision was performed. The tumor, 7 x 7 x 6 cm in size and 250 g in weight, was histologically diagnosed as leiomyoma. This is the 18th case of retrovesical leiomyoma reported in the literature in Japan.